JPH09176962A - Fiber structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fiber structure which comprises polyester fiber and/or triacetate fiber and contains colloidal free sulfur and is excellent in antimicrobial properties. SOLUTION: Polyester fiber and/or triacetate fiber are fiber dyed, then dipped in a treatment solution prepared by dissolving sulfur in a sodium sulfide aqueous solution, squeezed, rinsed with aqueous sulfuric acid until the liberation of hydrogen sulfide gas ceases. Then, the treated fibers are spun into yarns and the yarns are knitted to give an antimicrobial knitted fabric containing 0.01-19wt.% of colloidal sulfur.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION The present invention relates to polyester fibers and / or
Or, it relates to a fiber structure containing triacetate fibers and containing colloidal free sulfur.

[0002]

2. Description of the Related Art Skin diseases represented by atopic dermatitis are increasing year by year, and many fiber products containing fibers having antibacterial properties are on the market. 0.2 to 20% by weight of colloidal free sulfur disclosed in JP-A-3-19964 previously proposed by the present applicant
Cellulosic fiber contained has antibacterial properties that suppress the growth of Staphylococcus aureus, acne bacteria that cause acne, Trichophyton that causes athlete's foot, etc., and has a remarkable effect on skin diseases and the like. Therefore, it is used in various products.

The above colloidal free sulfur is 0.2-2.
When cellulosic fibers containing 0% by weight are mixed with polyester fibers or triacetate fibers, the conditions for dyeing the polyester fibers or triacetate fibers are generally high temperature / high pressure dyeing of about 130 ° C.,
Colloidal free sulfur has fallen off from the cellulosic fibers, and a fiber structure containing polyester fibers and / or triacetate fibers and containing colloidal free sulfur has not been obtained.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fiber structure using polyester fibers and / or triacetate fibers having antibacterial properties.

[0005]

SUMMARY OF THE INVENTION The present invention is a fiber structure containing polyester fibers and / or triacetate fibers and containing colloidal free sulfur, wherein the colloidal free sulfur is from 0.01 to A fiber structure comprising 19% by weight of the polyester fiber and / or the triacetate fiber dyed beforehand.

The fibrous structure of the present invention refers to a form such as a yarn, a non-woven fabric, a knitted fabric or the like. The fibrous structure of the present invention contains 0.01 to 19% by weight, preferably 0.05 to 19% by weight, and more preferably 0.10 to 10% by weight of colloidal free sulfur.
The content is 19% by weight. If the content is less than 0.01% by weight, the antibacterial effect is not exhibited, and it is difficult to contain the content in excess of 19% by weight.

The method for containing colloidal free sulfur in the fiber structure is a method in which a spinning product is made to contain a sulfur product and spinning is carried out. In post-processing, for example, an aqueous solution of sodium sulfide in which sulfur is dissolved or sodium thiosulfate is used. A method of immersing fiber, thread or cloth in an aqueous solution and decomposing it in an acid solution may be mentioned, but not particularly limited. In order to make the fibrous structure of the present invention contain 0.01 to 19% by weight of colloidal free sulfur, for example, Japanese Patent Application Laid-Open No. 3-199 proposed by the present applicant has been proposed.
It is preferred to utilize cellulosic fibers containing colloidal free sulfur as disclosed in Japanese Patent No.

The above-mentioned cellulosic fibers include hemp, cotton, cupra, viscose rayon, polynosic rayon,
Particularly preferred regenerated cellulose fibers such as polynosic rayon having an average degree of polymerization of 500 to 600, lyocell {LYO
CELL; For example, Journal of the Textile Society of Japan (Fiber and Industry) 48, [1
1] p. Corresponding to the trade name TENCEL manufactured by Courtles, Inc. described in 584 to 591 (1992). } Etc.

Since the fibrous structure of the present invention contains colloidal free sulfur, viscose rayon, polynosic rayon and lyocell are particularly preferable when cellulosic fibers containing colloidal free sulfur are used. When the above-mentioned cellulosic fiber is used in the fiber structure of the present invention, it may be a short fiber or a long fiber, and the dint and the fiber length are not particularly limited.

When a fiber containing colloidal free sulfur is used in the fiber structure of the present invention, 0.2 to 20% by weight is used.
Fibers containing free sulfur of
Those containing 10% by weight are preferable. If the fiber is less than this value, the antibacterial effect is difficult to be exhibited, and if it exceeds this value, it becomes difficult to produce a fiber such as odor and yarn breakage. When the fiber structure of the present invention uses the above-mentioned fiber containing colloidal free sulfur, the content of the fiber is preferably at least 5% by weight or more of the fibers constituting the fiber structure, It is more preferably 10% by weight or more, and particularly preferably 50% by weight or more.

The fiber structure of the present invention, depending on the application,
Threads, non-woven fabrics, knitted fabrics and the like may be post-processed to contain colloidal free sulfur. For example, soda sulfide obtained by dissolving sulfur in dyed polyester fiber and / or triacetate fiber and cellulosic fiber. It may be soaked in an aqueous solution and post-processed to contain colloidal free sulfur.

The dyed polyester fiber and triacetate fiber used in the present invention are the dyed polyester fiber and triacetate fiber only before being mixed with the fiber containing colloidal free sulfur in the form of staple fibers or yarns. And includes so-called spun yarn in which a pigment or the like is kneaded in the stage of producing the spun yarn. The polyester fiber used in the present invention refers to a polyester fiber dyed under high temperature and high pressure of 105 ° C. or higher and further 110 to 130 ° C. In the present invention, for example, when a fiber substantially made of polyethylene terephthalate is used. Is particularly useful for, may contain a copolymerization component in a range that does not impair the original properties of polyethylene terephthalate, heat-resistant agent, flame retardant,
You may contain additives, such as a matting agent.

The triacetate fiber has an acetylation degree of 4
Of acetate fibers that are 5.0% or more of cellulose acetate, it is a fiber made of cellulose acetate having an acetylation degree of 59.5% or more, and is a heat-resistant agent, flame retardant, matting agent within the range that does not impair the original properties of triacetate. It may contain additives such as. Polyester fiber, triacetate fiber used in the present invention, short fibers, long fibers, single yarn denier,
The number of filaments and polymer type are not particularly limited.

As the dyeing machine for the dyeing, the dyeing conditions, and the conditions for producing the spun yarn, conventionally known ones may be applied. In the fiber structure of the present invention, polyester fiber, triacetate fiber, or a mixture of both fibers is preferably 5 to 95% by weight, more preferably 20 to 80% by weight. If it is less than 5% by weight, the purpose of mixing polyester fibers and / or triacetate fibers, such as texture and morphological stability, is difficult to achieve, and if it exceeds 95%, an antibacterial effect is hardly recognized.

The fiber structure of the present invention may be a pre-dyed polyester fiber and / or triacetate fiber at a level that does not cause a problem as a product without post-dying.
Non-dyed polyester fibers and / or triacetate fibers may be mixed. Examples of the method for compounding the yarn-dyed polyester fiber and / or triacetate fiber and the fiber containing colloidal free sulfur include mixed spinning, for example, sliver mix, composite spinning, for example, fine spinning cross twist, cross twist, mixed fiber, for example, interlace blend. Either a fiber method or a mixed knitting method may be used.

In the fibrous structure of the present invention, the colloidal free sulfur-containing fibers may be present in the inner layer portion, the intermediate layer, a part of the outer layer portion in the fibrous structure or in the entire fibrous structure, but the outer layer It is more effective if they are mixed in the section. The use of the fiber structure of the present invention includes innerwear such as underwear, socks, towels, rugs, sheets, sheet covers, makeup puffs, gauze, gloves, lab coats, bandages, filters, industrial sanitary garments, blankets, and mufflers. Etc.

The fiber structure of the present invention may be a mixture of fibers other than polyester fibers, triacetate fibers and fibers containing colloidal free sulfur, if necessary. For example, colloidal free sulfur-free cellulosic fibers, and atmospherically dispersed or atmospherically cationic dyeable polyester fibers such as adipic acid, isophthalic acid, dicarboxylic acids represented by 5-sodium sulfoisophthalic acid, Alternatively, an atmospheric pressure dyeable copolyester containing a glycol such as polyethylene glycol, butanediol, neopentyl glycol or the like as a copolymerization component may be used.

As a specific example, a copolymerized polyester obtained by copolymerizing polyethylene glycol having a molecular weight of about 500 to 4000 with about 0.5 to 10% by weight of adipic acid or the like, or a high-speed spun polyester yarn of 6000 m / min or more. One or more mixed spinnings and composite spinning with various conventionally known fibers such as strips, diacetate, nylon, acrylic, polyurethane elastic fibers, polypropylene, polyvinyl chloride, polyvinylidene chloride, modified fibers with modified pill resistance, etc. , Mixed twist, mixed fiber, mixed knitting, and the like may be used. The fibers to be mixed may be pre-dyed fibers, or if atmospheric pressure dyeable fibers are mixed, colloidal free sulfur will fall off from the cellulosic fibers even if they are dyed under atmospheric pressure. Since it is difficult, it may be dyed under normal pressure if necessary.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described specifically with reference to examples, but the present invention is not limited to only examples. (1) Free Sulfur Analysis Method The content of colloidal free sulfur in the cellulosic fiber was measured by the following method.

200 ml of water, 20 g of boric acid and 10 g of thread were put in a 500 ml gas generator, boiled for 1 hour while passing nitrogen gas, and after cooling, neutralized with 6N caustic soda solution using phenolphthalein as an indicator. . Next, add 20 ml of 200 g / liter sodium sulfite and 1 g / l.
5 ml of stearic acid soap is added, and the mixture is boiled for 3 hours while passing nitrogen gas. After cooling, the solution is transferred to another 500 ml beaker. The thread is washed with 100 ml of water, and 10 ml of 40% formalin and a buffer solution of acetic acid and sodium acetate 20
Add ml. Next, concentrated acetic acid is added until the pH reaches 4.6, a fixed amount of 0.1N iodine water is added, and starch is back titrated with 0.1N sodium thiosulfate as an indicator. The above processing is performed in the same manner without inserting a yarn as a blank.

Free sulfur content (%) = (A−B) ×
0.0032 × 100 / g A; 0.1 N—Na ₂ S ₂ O ₃ titration (blank) (m
_{l) B; 0.1N-Na 2} S 2 O 3 drops of quantification (sample) (m
l) g; Yarn collection amount (absolutely dried) (g) (2) Antibacterial property According to JIS-L-1902. Six days after the inoculation of the bacteria, evaluation was made based on the width (mm) of the tinea faecalis / growth inhibition zone.

Species used: Trichophyton, Trichophylla
tonmentagrophytes (IFO 62
02) Medium used: PDA agar medium.

[0023]

Example 1 An aggregate of viscose rayon filament having a purity of 1.5 denier was dipped in a treatment liquid prepared by dissolving 3.0 g / liter of sulfur in 100 g / liter of sodium sulfide aqueous solution, and then, After squeezing the liquid, it was immersed in 140 g / l of sulfuric acid. When no hydrogen sulfide gas was generated, the product was taken out of the liquid, repeatedly washed with water, air-dried, hot-air dried, washed with a washing machine for 1 hour, and then air-dried.

The resulting viscose rayon filament aggregate contained 0.5% by weight of colloidal free sulfur. The above-mentioned aggregate cut into 38 mm and a regular polyester top dyed with a conventional method were mixed and spun at a polyester content of 80% to obtain a mixed yarn with a cotton count of 32.

Using this blended yarn, a circular knit fabric having a smooth structure of 18GG was prepared. The content of colloidal free sulfur contained in this circular knitted fabric was 0.1% by weight.
Then, after scouring by a conventional method, it was dried. Using the obtained circular knitted fabric, underwear was produced by a conventional method. The content of colloidal free sulfur in the obtained underwear was 0.1% by weight, and the antibacterial property (10.5 mm) was satisfactory.

[0026]

[Comparative Example 1] The rayon filament aggregate obtained in Example 1 was cut into 38 mm and a non-dyed regular polyester staple fiber was blended, and a cotton yarn having a polyester content of 80% was used to produce a 32 yarn yarn. Obtained. Using this blended yarn, a circular knitted fabric having a smooth structure of 18 GG was prepared, scoured by an ordinary method, and dispersed at 60 ° C. at
Minutes, 2 steps of 2 steps dyeing of polyester, reduction washing,
Then, the rayon was dyed with a reactive dye at 60 ° C. for 60 minutes, then soaped and dried.

The detection of colloidal free sulfur was 0.1% by weight before the dyeing process, but it was not detected in the obtained circular knitted fabric. Using the obtained dyed product, underwear was produced by a conventional method. No colloidal free sulfur was detected in the obtained underwear and there was no antibacterial property.

[0028]

Industrial Applicability The fiber structure of the present invention is a mixture of polyester fiber and / or trisateate fiber having excellent antibacterial properties.

Claims (1)

[Claims] 1. A fiber structure containing polyester fibers and / or triacetate fibers and containing colloidal free sulfur, wherein the colloidal free sulfur is 0.01.
-19% by weight, and the polyester fiber and / or the triacetate fiber is pre-dyed.